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Morning Mound Visit: sabermetrics news - 5/17/19

Ian Desmond’s possible turnaround; the transition to HawkEye; surprising starts for starters

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MLB: San Francisco Giants at Colorado Rockies Isaiah J. Downing-USA TODAY Sports

FanGraphs | Devan Fink: Ian Desmond has been pretty abysmal in his time with the Rockies, but all hope isn’t lost. Because his biggest weakness has been hitting more groundballs than anyone, his 2019 season has shown his groundball rate decrease while his hard-hit rate has done the opposite. If that continues, we may see a real rebound.

Baseball Prospectus | Rob Arthur ($): Trackman is on the way out, and HawkEye is on the way in. But the aggressive schedule in which the new tracking technology will be implemented, done in all 30 stadiums by next year, will cause tracking data to be funky and unreliable for a year or two afterward. The same has happened with Trackman and PitchF/X in the past, and we should be ready for it again.

The Athletic | Eno Sarris ($): Some starters have had surprising starts, and while some may be more indicative of how the rest of the season will go, others will buck the trend. Aaron Nola may be tending towards the sinker over the fastball, but it hasn’t been bad enough to truly worry. Domingo Germán has been untouchable, but there should be more home runs and doubles against in the summer. And while Lucas Giolito has shown promise, his command could still be troubling.